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资源发现类，这个类负责发现 Redhat 虚拟机资源。
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// RedhatVMDiscovery.cpp
#include "RedhatVMDiscovery.h"
#include <iostream>
#include <vector>
#include <curl/curl.h>
#include <json/json.h>

namespace ebackup {
namespace plugins {
namespace redhat {

RedhatVMDiscovery::RedhatVMDiscovery() 
    : discovery_interval_(std::chrono::seconds(30)), 
      is_active_(false), 
      is_batch_scan_(false) {}

RedhatVMDiscovery::~RedhatVMDiscovery() {
    stopDiscovery();
}

std::vector<VirtualMachine> RedhatVMDiscovery::discover() {
    std::vector<VirtualMachine> vms;
    CURL *curl = curl_easy_init();
    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "https://redhat-virtualization-api.com/vms");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
        CURLcode res = curl_easy_perform(curl);
        if (res == CURLE_OK) {
            parseResponse(response, vms);
        }
        curl_easy_cleanup(curl);
    }
    return vms;
}

void RedhatVMDiscovery::enableRealTimeDiscovery() {
    std::lock_guard<std::mutex> lock(mutex_);
    if (!is_active_) {
        is_active_ = true;
        discovery_thread_ = std::thread(&RedhatVMDiscovery::discoveryLoop, this);
    }
}

void RedhatVMDiscovery::enableBatchScanning() {
    std::lock_guard<std::mutex> lock(mutex_);
    is_batch_scan_ = true;
}

bool RedhatVMDiscovery::isDiscoveryActive() {
    std::lock_guard<std::mutex> lock(mutex_);
    return is_active_;
}

void RedhatVMDiscovery::stopDiscovery() {
    {
        std::lock_guard<std::mutex> lock(mutex_);
        is_active_ = false;
        cv_.notify_all();
    }
    if (discovery_thread_.joinable()) {
        discovery_thread_.join();
    }
}

void RedhatVMDiscovery::discoveryLoop() {
    while (true) {
        std::unique_lock<std::mutex> lock(mutex_);
        cv_.wait_for(lock, discovery_interval_, [this] { return !is_active_; });
        if (!is_active_) {
            break;
        }
        lock.unlock();

        std::vector<VirtualMachine> current_vms = discover();
        {
            std::lock_guard<std::mutex> cache_lock(mutex_);
            cached_vms_ = current_vms;
        }
    }
}

void RedhatVMDiscovery::updateCache(const std::vector<VirtualMachine>& vms) {
    std::lock_guard<std::mutex> lock(mutex_);
    cached_vms_ = vms;
}

} // namespace redhat
} // namespace plugins
} // namespace ebackup
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动态调整发现频率
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// RedhatVMDiscovery.cpp
void RedhatVMDiscovery::setDiscoveryInterval(std::chrono::seconds interval) {
    std::lock_guard<std::mutex> lock(mutex_);
    discovery_interval_ = interval;
}

void RedhatVMDiscovery::adjustDiscoveryFrequency() {
    // 根据系统负载和用户需求动态调整发现频率
}
“”“
增加异常处理和日志记录
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// RedhatVMDiscovery.cpp
#include <iostream>
#include <fstream>

void RedhatVMDiscovery::logDiscoveryStatus() {
    std::ofstream log_file("discovery.log", std::ios_base::app);
    log_file << "Discovery completed at: " << std::chrono::system_clock::now() << std::endl;
}

void RedhatVMDiscovery::handleDiscoveryError(const std::string& error_message) {
    std::cerr << "Discovery error: " << error_message << std::endl;
}
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验证资源发现结果
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// RedhatVMDiscovery.cpp
bool RedhatVMDiscovery::validateDiscoveryResults(const std::vector<VirtualMachine>& vms) {
    // 验证发现的虚拟机信息是否完整和准确
    return true;
}
